木材科学与技术2024，Vol.38Issue(3)：21-32,12.DOI:10.12326/j.2096-9694.2023181
海南椰子木维管束形态特征及其与物理力学性能的关系
Relationship Between Morphological Characteristics of Vascular Bundles and Physical and Mechanical Properties of Hainan Coconut Wood
摘要
Abstract
The vascular bundle is an important component whose microscopic characteristics and distribution affect coconut wood's physical and mechanical properties.In order to evaluate the variation of vascular bundles and their effect on the physical and mechanical properties at various tree positions,40-year-old coconut wood from Hainan province of China was tested.The distribution density,diameter,cross-section area,and total area percentage of vascular bundles were evaluated in height and radial directions,while the total area percentage of vascular bundle effect on density and mechanical properties were also investigated.The results showed that there are no significant differences in the morphological characteristics of vascular bundles and physical and mechanical performance among different trees,except in total area proportion of vascular bundles and MOR.In the radial direction,the distribution density,diameter,cross-section area,and total area percentage of vascular bundles gradually increase from the center to the periphery,showing a significant positive linear correlation along the radial position.The density and mechanical properties of coconut wood gradually increase from the center to the periphery,with a high positive linear correlation with the total area proportion of the vascular bundles.In the height direction(from bottom to top),the diameter and cross-section area of the vascular bundles gradually decreased,and the distribution density and total area percentage of the vascular bundles first increased and then decreased,with an overall strong negative linear correlation.In general,the density and mechanical properties of coconut wood increase as the area percentage of vascular bundles increase.A model of the physical and mechanical properties of coconut wood is developed based on the proportion index of vascular bundle area.The predicted results from the model provide a basis for sawing and grading coconut wood.关键词
椰子木/维管束/形态特征/物理力学性能Key words
coconut wood/vascular bundle/morphological characteristics/physical and mechanical properties分类
农业科技引用本文复制引用
陆全济,蒋汇川,李家宁,李民,李冠君..海南椰子木维管束形态特征及其与物理力学性能的关系[J].木材科学与技术,2024,38(3):21-32,12.基金项目
海南省自然科学基金项目"维管束结构形态及分布对椰子木物理力学性能影响"(521MS097). （521MS097）
